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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.